Window-screen.



No. 790,752. PATENTED MAY 23, 1905.

- H. L. ROBERTS.

WINDOW SCREEN.

APPLICATION FILED JULY 28, 1904.

ZSHEBIS-SHEBT 1.

WITNESSES. l/VVE/VTOR No. 790,752. PATENTED MAY .23, 1905.

H. L. ROBERTS.

' WINDOW SCREEN.

APPLIOATION FILED JULY 28, 1904.

2 SHEETS-SHEET 2.

UNITED STATES Patented May 23, 1905.

PATENT Gimme.

WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 790,752, dated May 23, 1905.

Application filed July 28, 1904. Serial No. 218,448.

T0 (1% whom it may concern:

Be it known that I, HENRY L. ROBERTS, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a certain new and useful Improvement in VVindow-Screens, of which the following is a specification.

My invention relates to a new and useful improvement in window-screens, and is intended as an improvement over patent granted to me on window-screens November 25, 1902, No. 714,519; and this invention has for its object to provide a construction in which the window-screen frame will be-lightened, take up less space, but be extremely durable and efIicient.

WVith these ends in view this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation will now. be described in detail, referring to the accompanying drawings, forming a part of this specification, in which Figure 1 is a rear elevation of my improved screen; Fig. 2, a section taken on the line 2 2 of Fig. 1; Fig. 2, a section taken on the line 2 2 of Fig. 1 with the sliding screen raised; Fig. 3, a perspective view of the upper corner of the screen, showing the construction of the extension; Fig. 4, an elevation of a portion of the blank from which the top and bottom rails of the front frame are formed; Fig. 5, an end view of the top crossstrip of the front frame after it is folded; Fig. 6, an elevation of one end of the blank of the binding-strip of the sliding screen which slides within the groove of the front frame; Fig. 7, a cross-section of the bindingstrip after it is folded.

In my former patent above referred to the screen consisted of a main frame one half of which is covered permanently with wire-cloth, the other half being slidable in the main frame, so that it may be raised and lowered whenever desired, and the screen may or may not be provided with side extensions to adapt it to any size window. This present application is for the same form of screen, the improvements consisting mainly in the construction of the frame.

In the drawings, A represents the top and bottom cross-pieces of the main frame, which in this case are formed of sheet metal from a blank, a portion of which is shown inelevation in Fig. 4. The dotted lines in Fig. 4 show the points at which the blank is bent, and the different portions are referred to by the numbers 1, 2, 3, 4, 5, and 6. The body portions of the cross-pieces are bent in the form of a channel, opening toward one another, and these body portions are formed by the portions 3, 4, and 5, 3 and 5 being the front and back and 4 being the top in the top rail and bottom in the bottom rail.

B represents the side stiles of the main frame, the upper and lower ends of which extend into the channels of the top and bottom rails and are secured thereto by nails or screws.

C is a cross-piece extending across the middle of the frame and attached at each end to the side stiles B.

D is the wire-cloth attached permanently to the main frame, the upper edge of said wire-cloth being secured to the top rail A by bending the portion 6 back upon the portion 5 and clamping the wire-cloth in between in this manner, the lower edge of the wire-cloth being secured to the middle cross-rail (l, as shown in Fig. 2. The sides of the cloth D are secured to the side stiles D by nailing or screwing a strip E to the side stiles between which the wire-cloth is secured. To the opposite side of the stiles B from the strip E is secured a strip F, channeled out at its inner edge to form a vertical groove F, as shown in Fig. 2.

Gr represents the sliding screen, the top and bottom edges of said screen being clamped between the strips H and H, the edges of said screen being clamped in the metallic binding-strip I, a portion of one end of which is shown in the blank form in Fig. 6, the dotted lines indicating where the blank is bent from the strip, the different portions of the strip being represented by the numbers 8, 9, 10, and 11, the main portion of the strip being composed of the three parts 7, 8, and 9, and theedges of the wire-cloth ofthe screen G are clamped within the folds thus made, so that a flat binding-strip is formed adapted to slide within the groove F in the main frame. The ears 10 and 11 at each end of the strip are clamped betweenthe strips Hand H and secured thereto by nails or screws, so that after the sliding frame is formed it may be raised and lowered in the main frame. Springcatches J for holding the sliding frame in its raised or=lowered position are utilized, as in my former patent.

K represents the extensionscreens upon each side, each extension-screen being composed-o'f'theside stiles L, to which the wirecloth is attached, and the upper and lower arms M, to which 'the'upper and lower edges of the wire-cloth are attached, the other edge of the wire-cloth being secured between a metallic strip N folded so as to bind this edge, the upper and lower ends of said metallic strip being secured tothe arms M, said arms projecting inward beyond the strips andare adapted to slide within a groove O, formed by tbebending ofthe portions 1 and 2 ofthe top and bottom rails A'of the main frame. Thus the side extensions may be pushed inward'or pulled outward, the arms M sliding within the groove 0.

In-orderto limit the movement'of the extension-screens, I form through the portion 3 of the top and bottom rails the slots =1, and by placing screws Q through the arms M and through the slots 'P the movement of the extension-screens is limited.

Ofcourse 1" do not wish to be limited tothe exact construction here shown, as slightmodifications could be made without departing from the spirit of my invention. I

Having thus fully described my invention, what I'claim as new and useful is 1. In awindow-screen, amain frame, the'top and bottom cr oss-pieces'of which are made of sheet metal bent in channel form, side stiles secured at their ends in the'channels-of the topand bottom cross-pieces, a center crossrail dividingthe screen in two parts and secured at each end-to the side stiles, wire-cloth secured permanently to the upper metallic cross-rail, to the center cross-rail and to the side stiles, a supplementary frame covered with wire-cloth fitted to slide in the main frame, the side strips of the supplementary frame being formed of sheet metal bent so as to clamp the edges'of the wire-cloth within the folds of the same, as and for the purpose specified.

2. In-a window-screen, a main frame, the top and bottom cross-rails of which are of sheet metal bent in the form of a channel, side stiles of wood, the ends of'which fit within the channels of the top and bottom cross-rails and are secured thereto, a center cross-piece of wood secured at each end to the side stiles, wirecloth secured permanently-to the upper portion, the'upper-edge of -the wire-cloth being clamped to the metallic cross-rail by folding a portion of said cross-rail back upon itself so as to clamp the wire-cloth between said .folded portion and the channel portion of the cross-rail, the lower edge of said wire-cloth secured to the center cross-rail, the side edges of the wire-cloth being secured to the side stiles, a supplementary frame covered with wire-cloth fitted to slide in the main frame and normally close the "lower portion, said supplementary frame consisting of top and bottom cross-pieces of wood to which the top and bottom edges of the wire-cloth are secured, metallic strips composing :the side pieces of the supplementary frame,.said metallic strips foldedsoas to clamp the wirecloth within its folds, said metal strips after being folded secured attheirupperand lower ends to the upper and lower cross-pieces of the supplementary frame and 'adaptedto slide within the grooveof themain frame, asand for the purposespecified.

3. 1n a=window-screen,a=main:frame, the top and bottom cross-:pieces of whichare formed of sheet metal bent so as to form achannel, side stilesof wood, the top and bottom 'ends of which are adapted to enter the-channelsof the top and bottom cross-pieces and be secured thereto, a center cross-piece of wood, wirecloth secured permanently to the upper portion, a supplementary frame covered with wire-cloth fitted to slide in :the'main'frame and normally close the :lower portion, extension-screens arranged upon each side of the main frame, each extension-screen consisting of a side stil'e, arms extending inward from the top and .bottom :ends of the side stile, wire-cloth secured to the top and bottom arms and to the side stile, ametallic strip folded so as to clamp the other edge of the-wire-cloth of the-extension-screens within its folds, said metal strip secured at its upper and lower ends tothe arms midway between their two ends, the upper and lower cross-pieces of the mainframe being folded soas to form horizonta'l grooves or channels in which the inward extending portions of the arms are adapted to slide, slots formed in the metallic cross-pieces of the main frame, screws-or pins passing through the arms-of the extensionframes and through the slots for the purpose of limiting the movementof the extensionframes, as specified.

In testimony whereofI have hereunto affixed my signature in the presence of two subscribing witnesses.

HENRY L. ROBERTS.

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